AS GCE PHYSICS B (ADVANCING PHYSICS) - ocr.org.uk

1 Friday 18 January 2013 MorningAS GCE PHYSICS B (ADVANCING PHYSICS )G492/01 Understanding Processes / Experimentation and Data HandlingINSTRUCTIONS TO CANDIDATES Write your name, centre number and candidate number in the boxes above. Please write clearly and in capital letters. Use black ink. HB pencil may be used for graphs and diagrams only. Answer all the questions. Read each question carefully. Make sure you know what you have to do before starting your answer. Write your answer to each question in the space provided.

2 Additional paper may be used if necessary but you must clearly show your candidate number, centre number and question number(s). Do not write in the bar FOR CANDIDATES The number of marks is given in brackets [ ] at the end of each question or part question. The total number of marks for this paper is 100. You may use an electronic calculator. You are advised to show all the steps in any calculations. The values of standard physical constants are given in the Data, Formulae and Relationships Booklet.

3 Any additional data required are given in the appropriate question. Where you see this icon you will be awarded marks for the quality of written communication in your means for example, you should: ensure that text is legible and that spelling, punctuation and grammar are accurate so that meaning is clear; organise information clearly and coherently, using specialist vocabulary when appropriate. This document consists of 24 pages. Any blank pages are indicated.*G49201*OCR is an exempt CharityTurn over OCR 2013 [H/500/8367]DC (NS/CGW) 51591/9 Candidates answer on the Question supplied materials: Insert (Advance Notice for this question paper) (inserted) Data, Formulae and Relationship Booklet (sent with general stationery)Other materials required: Electronic calculator Ruler (cm / mm) Protractor*G411640113*Duration.

4 2 hours2 OCR 2013 SECTION A1 Here is a list of combinations of base units of the SI m s 1 kg m s 2 kg m 2 s 2 kg m 1 s 2 kg m 2 s 1 Choose the combinations of units for (a) kinetic energy .. [1] (b) force.. [1]2yxyxyx00000 ABCD000yx State which graph, A, B, C or D, best represents the relationship between the two quantities given in each case below. (a) y-axis: the frequency of a wave x-axis: the wavelength of that wave.

5 [1] (b) y-axis: the kinetic energy of a moving object x-axis: the speed of that object ..[1] (c) y-axis: the speed of an object falling from rest on Earth, assuming air resistance is negligible. x-axis: the time it has been falling.

6 [1] (d) y-axis: the speed of an object falling from rest on Earth, assuming air resistance is negligible. x-axis: the distance it has fallen ..[1]3 Turn over OCR 20133 Fig. shows the velocity time graph for the motion of a / sv / m s 1910086420 Fig. (a) Calculate the distance travelled by the car in the first 8 seconds.

7 You should show your working. distance = .. m [2] (b) Use the graph to estimate the deceleration of the car at t = s. You should show your working on the graph and in this space. deceleration = .. m s 2 [2] (c) Which sketch graph, A, B, C or D, best represents the displacement time graph for this journey?stAstBstCstD answer ..[1]4 OCR 20134 Fig. shows standing waves of frequency Hz on a mFig. (a) Write down the wavelength of the wave. wavelength =.

8 M [1] (b) Calculate the speed of the wave. speed = .. m s 1 [1] 5 Turn over OCR 20135 Parallel wavefronts of wavelength and frequency f pass through a gap of width d and spread out by diffraction. Which one of the following must cause the amount of spreading to increase? Put a tick ( ) in the box next to the correct d and increasing increasing d and decreasing decreasing d and increasing fincreasing d and decreasing f [1]6 Fig. shows two paths of light leaving a source, passing through two slits and reaching a point on a screen.

9 Sourcetwo slitsscreennot to scaleFig. Which of the following statements about photons arriving at a point on the screen are true? Put a tick ( ) in the box next to each correct light photons travel faster than infrared energy of a photon increases with the frequency of the probability of a photon reaching the point can be found by considering the phasors for all photon than one photon must reach the point at once if there is to be destructive interference at that point. [2]6 OCR 20137 Two parallel clear lines are scratched on a darkened glass slide, mm apart.

10 When a beam of light is shone through the slits, interference fringes are observed on a screen m distant. Measurement of these fringes is shown in Fig. cmxFig. (a) Calculate the fringe separation x in metres. x = .. m [1] (b) The first order diffraction angle is related to the fringe spacing x and distance to the screen as shown slitsangle e not to mx Show that the angle is about . [2] (c) Calculate the wavelength of light from the data given.